4
9
3
5
9
7
2
3
7
6
5
3
1
6
4
8
4
3
2
7
6
2
8
5
Time 00:00
Mistakes 0
Ready
Medium Sudoku #148
You will want pencil marks: locked candidates, pairs and triples.
| Difficulty | Medium |
| Clues given | 24 of 81 |
| Technique score | 106.8 |
| Rated techniques | 3 |
Techniques this puzzle needs
Where to start
The first move on this board is a Hidden Single: In this column 7, 3 can only go in one cell, so it must go there.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.